Sheet metal edging apparatus



Sept. 10, 1968 w. GAUER SHEET METAL EDGING APPARATUS 4 Sheets-Sheet 1 Filed Dec. 15, 1966 INVENTOR.

WALTER GAUER dul- )5 FIG.2

AGENT W. GAUER Sept. 10, 1968 SHEET METAL EDGING APPARATUS 4 Sheets-Sheet 2 Filed Dec. 13, 1966 INVENTOR.

WALTER GAUER AGENT Sept. 10, 1968 w. GAUER SHEET METAL EDGING APPARATUS Filed Dec. 13, l96

.: 1 I g j g 252 l 4 Sheets-Sheet 3 FIG.9

INVENTOR.

WALTER GAUER AGENT United States Patent "Ice 3,400,566 SHEET METAL EDGING APPARATUS Walter Gauer, 48 S. 18th St., Kenilworth, NJ. 07033 Filed Dec. 13, 1966, Ser. No. 607,589 14 Claims. (Cl. 72--199) ABSTRACT OF THE DISCLOSURE Sheet metal edging apparatus for deburring and forming the edges of sheet metal and metal strip material within a wide range of sheet metal and metal strip width and thickness dimensions comprising a pair of carriage means adjustably spaced laterally of each other and carrying cooperating members to provide the plural functions of deburring, shaping 0r forming and finishing of sheet or strip material passing therebetween.

Background of the invention When metal sheet or strip material of desired dimensions is sheared from comparatively larger sheet metal stock, there is the attendant formation of burrs or ridges out of the plane of the strip or sheet edges along the longitudinal dimensions of the strip or sheet. These burrs or ridges are often extremely sharp and present a hazard in the handling of the sheared strip or sheet. Apart from the potential hazard, the sheared edges lack edge uniformity and desirable shape along their lengths.

Various types of sheet or strip metal edging apparatus are known, but in general they lack the versatility of easily, as a single unit, accommodating a wide range of sheet dimensions, they lack operability to provide constant edge tolerances for metals of different compositions at substantially high speed operations, and they are otherwise not adaptable for rapid easy adjustment ,to accom modate a change from one sheet or strip material to another of different width to undergo continuous deburring, shaping and finishing of the edges thereof.

Summary of in invention In accordance with this invention there is provided a sheet metal edging apparatus which comprises first and second carriages adjustably spaced laterally of each other and mounted on rail means for adjustable translatory movement relative to each other. A fixed seat is mounted preferably adjacent one end portion of the rail means and the first carriage is yieldably connected to the fixed seat by a pressure yieldable compression means connected therebetween. Each carriage is a composite carriage comprised of a central block and a pair of wing blocks, one wing block being adjustably rotatably secured to one side of the central block and the other wing block being adjustably rotatably secured to the opposite side of the central block so that the blocks are aligned in a direction transversely of the rail means. The said pressure yieldable compression means is connected to the central block of the said first carriage, whereby the central block and the connected wingblocks are simultaneously yieldably influenced by the said compression means. The second carriage is provided with motivating means for urging it along the rail means at selectively adjustable positions toward the first carriage. The motivating means being connected to the central block of the second carriage, whereby the central block and the connected wing blocks ofthe second carriage are simultaneously motivated by the motivating means. Each of the blocks of the first and second carriages carry removable sheet metal edging means, whereby each of the sheet metal edging means is simultaneously influenced by the compression means 3,400,566 Patented Sept. 10, 1968 and motivating means when a workpiece is engageably positioned between the edging means of the carriages, thereby eliminating separate major adjustment of the edging means and maintaining substantially uniformly adjustable compression on the workpiece.

Description of the drawings FIGURE 1 illustrates a party cut-away top view of the apparatus of the invention,

FIGURE 2 illustrates a top diagrammatic view showing the adjustable nature of components of the invention,

FIGURE 3 illustrates a cross-sectional view of an upper portion of the apparatus along lines 33 of FIG- URE 1,

FIGURE 4 illustrates a partial view along lines 4-4 of FIGURE 3,

FIGURE 5 illustrates a cross-sectional view along lines 55 of FIGURE 1,

FIGURE 6 illustrates a cross-sectional view of a roll member along lines 66 of FIGURE 2,

FIGURE 7 illustrates a cross-sectional view of a roll member along lines 7--7 of FIGURE 2,

FIGURE 8 illustrates a cross-sectional view of a roll member along lines 88 of FIGURE 2,

FIGURE 9 illustrates a top diagrammatic view showing a ring as a workpiece,

FIGURE 10 illustrates a top diagrammatic view showing a disc as a workpiece, and

FIGURE 11 illustrates a top view of a modified form of the apparatus for handling irregular shaped workpieces.

Description of the preferred embodiments Referring to FIGURES 1, 3, 4 and 5, the apparatus of the invention comprises a housing generally designated as 10 having a bottom wall 12, side walls 14 and 16, front wall 18, rear wall 20, and top wall 22. Internally of the housing 10 is a support means in the form of an inner plate of wall 24 defined by the side wall 14 and 16 and front wall 18 and rear wall 20. The support plate or wall 24 divides the interior of the housing into upper chamber 26 and lower chamber 28. The support wall is provided with a longitudinal slot 30 extending from side wall 14 to side wall 16 intermediate the front and rear walls and defined by laterally spaced parallel slot edges 32 and 34. The upper marginal longitudinal areas of plate 24 adjacent the edges 32 and 34 constitute and function as a rail means hereinafter more particularly referred to.

In accordance with the invention there is provided first and second composite carriages designated in general as 36 and 38, respectively, adjustably spaced laterally of each other and longitudinally of the slot 30. Carriage 36 comprises a base block or central block 40 having a pair .of wing blocks 42 and 44 each being rotatably secured to one side of the base block 40. Wing block 44 is provided with a vertical recess 46 adjacent one corner thereof and having upper and lower abutments 48 and 50, as shown in FIGURE 5. A pivot pin 52 is press-fitted into recess 46 with the ends thereof being retained by abutments 48 and 50. The base block 40 is provided with an apertured tongue 54 extending outwardly thereof into recess 46 and cooperating with the pivot pin 52 whereby the wing block 44 is pivoted or rotatably secured to the block 40 adjacent one side thereof. The adjacent sides of base block 40 and wing block 44, at locations spaced laterally of the pivot pin 52, are each provided with axially aligned blind bores or indents 58 and 60, as illustrated in FIGURE 1, which cooperate to receive and retain a spring means 62 therebetween for normally urging the wing block 44 outwardly of the block 40 about the pivot pin 52. Wing block 44 is further provided with a transverse bore 64 therethrough and opening in the direction of block 40. The side of block adjacent block 44 has a threaded bore 66 formed therein and positioned for alignment with bore 64. The bore 64 is of larger diameter than bore 66. In lieu of bore 64, a side of the block 44 may be grooved in alignment with the threaded bore 66. An adjusting pin 68 having one threaded end is passed through the groove or bore 64 and threadedly engaged into the threaded bore 66 While the shoulder 70 at the other end of the pin is in abutment with the side of the block opposite spring 62. The head 72 of the pin 68 is provided with a gripping means or slot 74 whereby the pin 70 may be advanced or partially retracted from int-o block 40 thereby rotatably or angularly adjusting the spacing between blocks 40 and 44.

Wing block 42 is mounted on another side of block 40 opposite to the side to which block 44 is secured. Otherwise the components and structure associated with block 42 are identical to that associated with block 44 and therefore identical structural components are identified by identical numerical reference numbers, except that the head 72 of the pin 68 passing through block 42 is provided with a knurled knob 76 instead of the groove 74.

Carriage 38 is substantially identical to carriage 36 and comprises a base block or central block 78 having a pair of wing blocks 80 and 82 each being rotatably secured to one side of the base block 78. Wing block 82 is provided with a vertical recess 84 adjacent one corner thereof and having abutments identical with abutments 48 and 50 as shown in FIGURE 5. A pivot pin 86 is press-fitted into recess 84 with the ends thereof being retained by the abutments identically as with pivot pin 52 of FIGURE 5. The base block 78 is provided with an apertured tongue 88 extending outwardly thereof into recess 84 whereby the wing block 82 is rotatably secured to block 78 adjacent one side thereof. The adjacent sides of base block 78 and wing block 82, at locations spaced laterally of the pivot pin 86 are each provided with axially aligned blind bores or indents 90 and 92, which cooperate to receive and retain a spring means 94 therebetween for normally urging the wing block 82 arcuately outwardly of the block 78 about the pivot pin 86. Wing block 82 is further provided with a transverse bore 96 therethrough and opening in the direction of block 78. The side of the block 78 adjacent block 82 has a threaded bore 98 formed therein and positioned for alignment with bore 96. The bore 96 is of larger diameter than bore 98. A groove may be employed in lieu of the bore 96 similarly as with the substitution of a groove for bore 64. An adjusting pin 100 having one threaded end is passed through the bore 96 and threadedly engaged into the threaded bore 98 while the shoulder 102 at the other end of the pin is in abutment with the side oft he block opposite spring 94. The head 104 of the pin 100 is provided with a gripping means 106 whereby the pin 100 may be advanced or partly retracted from block 78 thereby angularly adjusting the spacing between blocks 78 and 82 under tension supplied by spring 94.

Wing block 80 is mounted on another side of block 78 opposite to the side to which block 82 is secured. Otherwise the components and structure associated with block 80 are identical to that associated with block 82 and therefore identical structural components are identified by identical reference numerals, except that the head 104 of pin 100 passing through block 80 is provided with a knurled knob 108 instead of the gripping means 106.

Referring to FIGURES 3, 4 and 5, the base block 40 is provided with a vertical bore 110 formed therethrough and with bearing rings 112 and 114 mounted therein at the upper and lower end portions, respectively, of the bore 110. A rotatable shaft 116 is journalled in the bore 110 and end portions 118 and 120 thereof extend outward of the top and bottom of the block 40. A roll 122 is removably coaxially mounted on the upper shaft end 118 and a chain sprocket 124 is fixedly mounted on the bottom shaft end 120. Opposite sides of block 40 at the lower end portion thereof are each provided with a channel 126 and 128 and the block is mounted in the slot 30 with the slot edges 32 and 34 engaging the channels and the opposite longitudinal marginal portions of plate 24 adjacent the slot edges thereby functioning as rail means along which the block 40 is slidable longitudinally of the slot and simultaneously carrying the connected wing blocks 42 and 44 during the sliding movement. The upper face of block 40 is cut-away along opposite side portions to provide block guides 130 and 132 permitting the upper portion of block 40 to slide in slot 134 in top wall 22 between the slot edges 136 and 138, the slot 134 being directly above and co-directional and co-extensive with support plate slot 30 as illustrated by FIGURES 1 and 5. The slots 30 and 134 terminate at the side 14 and a spring seat means 140 is mounted on the inner surface of wall 14 in upper chamber 26 between the slot 30 edges 32 and 34. The base block 40 is provided with a plurality of identical recesses identified by the common reference 142. A plurality of identical springs 144 engage both the recesses 142 and the spring seat 140 thereby normally yieldably maintaining the block 40 in spaced relationship from spring seat 140, whereby block 40 is yieldably connected to spring seat 140 and the springs providing for yieldable compression against block 40 when motivated toward the spring seat.

Regarding FIGURES l and 4, a motor 146 is mounted on bottom wall 12 inside lower chamber 28, a reduction gear means 150 a conventionally connected to the motor. A reduction gear shaft 152 leads upwardly from the reduction gear means and has a clutch means 154 connected thereto. The clutch means is provided with an upwardly extending clutch shaft 156 on which is mounted a chain sprocket wheel 158. A conventional chain means 160 is connectively mounted on the sprockets 124 and 158 whereby the roll 122 is power driven when the motor 146 is energized.

Referring to FIGURES 1 and 5, the wing block 44 is provided with a vertical bore 162 formed therethrough and a shaft 164 is rotatably mounted in the bore 162. The shaft 164 extends upwardly of the wing block and a roll 166 is removably mounted on the shaft. Wing block 42 is provided with a shaft 168 identical to that of shaft 164 and a roll 170 is removably mounted on shaft 168. The top wall 22 is provided with a pair of identical short slots 172 each on an opposite side of slot 134 and through which pass the shafts 164 and 168. The short slots 172 are dimensioned to provide for relatively short arcuate movement of the shafts therein with the degree of such movement being determined by the adjustment settings of the adjustment pins 68.

Referring to FIGURES l and 3, the base block 78 of carriage 38 is provided with a vertical bore 174 and with hearing rings 176 and 178 mounted therein at the upper and lower end portions, respectively, of the bore 174. A rotatable shaft 180 is journalled in the bore 174 with end portions 182 and 184 thereof extending outwardly of the top and bottom of the block. A roll 186 is removably coaxially mounted on the upper shaft end 182 and a shaft retaining means 188, e.g. a C-clamp, is mounted at the lower shaft end 184. The wing blocks 80 and 82 are each provided with vertical bores, vertical shafts 190 and 192, respectively, identically as with the bores and shafts of wing block 44 as illustrated by FIGURE 5. Shafts 190 and 192 have rolls 194 and 196, respectively, removably mounted thereon identically as roll 166 is mounted on shaft 164. Opposite sides of base block 78 at the lower end portion thereof are each provided with a channel identical to the channels 126 and 128 of base block 40 and the block 78 is also mounted in the slot 30 with the slot edges 32 and 34 engaging the channels and the longitudinal marginal portions of plate 24 adjacent the slot edges functioning as rail means along which the block 78 is slidable longitudinally of the slot, and simultaneously carrying the connected wing blocks 80 and 82 during the sliding movement. The upper face of block 78 is also cut-away along opposite side portions to provide block guides identical to guides 130 and 132 of block 40 thus permitting the upper portion of block 78 to slide in the slot 134 in top wall 22 between the slot edges 136 and 138. It is apparent that the blocks 40 and 78 are movable relative to each other alOng a common rail means.

Referring to FIGURES 1 and 3, a threaded bore 198 is formed through base block 78 intermediate the top and bottom thereof, spaced laterally of vertical bore 174 with the slot 30'. A threaded screw 200 is threadedly engaged through the bore 198. One end of the screw 200 is thread-free and passes through a journal 202 provided with an inner bearing means 204 and mounted through side 16 of housing with a bell crank 206 being fixed to the thread-free end of the screw extending outwardly of the wall 16.

A pair of bridge members 208 and 210 are mounted on wall 22 spaced laterally of each other longitudinally of and span the slot 134. An elongated roll 212 is mounted in slot 134 with its opposite ends journalled or rotatably mounted on the bridge members. Upright 214 is mounted on the upper portion of wall 16 above the shaft 200 and extends above the annular roll 182. Another upright 216 is vertically movably mounted on the upper portion of the opposite wall 14 and extends above the annular roll 122. Upright 216 is a composite upright with an upper part pivotally connected to a lower part as at 218. A shaft rod 220 is mounted between the uprights with each of its ends being connected to an upper portion of the uprights and its axis being in vertical parallel alignment with the axis of elongated roll 212 therebeneath. Another elongated roll 222 is co-axially mounted on shaft rod 220 intermediate its ends and directy above roll 212. The roll 222 can be disengaged from its position above roll 212 by releasing one end from upright 214 and lifting it in an upward are about the pivot 218 on upright 216. The roll 222 may be vertically adjusted relative to roll 212 by manipulating adjusting screw 224 thereby motivating the upright 216 relative to the lowermost part 226 of the upright which is fixed to the side 14.

Regarding the annular rolls 196 and 194 mounted, respectively, on vertical shafts 192 and 190, these rolls are vertically spaced from the upper surfaces of wing blocks 80 and 82 sufficiently to permit the shafts 190 and 192 to travel in and length-wise of the elongated slots 228 and 230 formed in top wall 22 parallel to and on both sides of the slot 134. The vertical spacing of the rolls 196 and 194 relative to the wing blocks 80 and 82 is identical to the spacing of roll 166 relative to wing block 44 as illustrated in FIGURE 5.

Referring to FIGURE 1, the opposite upper portions of walls 14 and 16 are each provided with an ear 232 and 234, respectively, extending outwardly of front wall 18. An elongated support roll 236 is mounted between and connected to the ears 232 and 234.

Referring to FIGURES l and 3, a pinch roll assembly 237 is mounted on the rear side of housing 10. The pinch roll assembly comprises a pair of upwardly extending arms 238 and 240 secured to the rear wall 20 and extending upwardly above the top wall 22. A pair of elongated rolls 242 and 244 are mounted on and between the arms With the roll 242 being positioned vertically above and in alignment with a lower roll 244. The rolls 242 and 244 are vertically adjustable relative to each other by means of spring loaded adjustment clamps 246 and 248. One of the rolls is a power-driven roll driven by conventional drive means. The top roll 242 is vertically adjustable by means of lifting means operated by lever 250. A second pinch roll assembly 251 identical with the pinch roll assembly 237 (shown schematically) may be identically mounted on the front wall 18 in lieu of the support roll 236. A pair of laterally spaced guide means 253 and 255 are positioned on the pinch roll assembly adjacent and rearwardly of the rolls 242 and 244 and a pair of laterally spaced guide means 257 and 259 are positioned on the pinch roll assembly adjacent and forwardly of the rolls 242 and 244.

FIGURES 6, 7 and 8 illustrate the particular construction of the annular rolls 166, 196, 122, 186, 170 and 194. Rolls 166 and 196 are a pair of identical rolls. Rolls 122 and 186 are a pair of identical rolls. Rolls 170 and 194 are a pair of identical rolls. Rolls 166 and 196 are annular rolls each having a circumferential co-axial V-shaped groove 252 in the peripheral surface thereof and are hereinafter referred to as the pair of deburring rolls or edge set-up rolls. Rolls 122 and 186 are annular rolls each having a circumferential co-axial U-shaped groove 254 in the peripheral surface thereof and are hereinafter referred to as the pair of round-edging rolls. It will be seen that while the groove 252 of roll 166 terminates as the apex of an angle, the groove 254 of roll 122 terminates as a concave arcuate seat. Rolls 170 and 194 are annular rolls each having a circumferential co-axial U-shaped groove 256 in the peripheral surface thereof. The groove 256 of roll 170 also terminates as a concave arcuate seat, but the arcuate seat is of greater width and less curvature than that of groove 254, and rolls 170 and 194 are hereinafter referred to as the finishing or cambering rolls.

In operation, the lever 250 of pinch assembly 237 is manipulated to raise the upper pinch roll 242 from contact with the lower pinch roll 244. A metal strip 262 is positioned between the guides 253 and 255 and between the pinch rolls 242 and 244 and is passed between guides 257 and 259 and is continued to be hand passed forwardly over roll 212 until the forward end passes roll 170 of carriage 36 and one side edge is in contact with grooves 252, 254 and 256 of rolls 166, 122 and 170, respectively. Bell crank 206 is then hand operated to activate the screw 200 to advance the carriage 38 toward the other side of the strip 262 until it is in contact with the grooves of rolls 196, 186 and 194. After such contact, the crank is further turned until the springs 142 yield under pressure and exert a compression force compressively urging the rolls of carriage 36 against one side of the strip with the compressive force being transmitted through the strip to the opposite strip edge in contact with the rolls of carriage 38. In this position, as illustrated by FIGURE 2, the deburring rolls 166 and 196 are adjusted to assume the solid line position, by manipulating the adjustment pins 68 and of wing blocks 44 and 82, when substantial deburring of the strip edges is contemplated. When it is desired to merely compress the burrs without some bevelling of the edges for setting up the burrs just sufiiciently for the subsequent round-edging stage, the rolls 166 and 196 are adjusted to assume the outer broken line positions. When the strip material emerges from the round-edging rolls 122 and 186 in a straight condition, the adjustment pins 68 and 100 of wing blocks 42 and 80 are adjusted to have rolls 170 and 194 assume the solid line positions. When the strip 262 emerges from rolls 122 and 186 with some camber, the rolls are adjusted to assume dotted line positions inwardly of one roll and outwardly of the other roll in a direction depending on whether the camber is to the left or the right, whereby the camber is eliminated.

Having so positioned and compressed the strip 262 between carriages 36 and 38, motor 146 is activated to drive the driving roll 122, as hereinbefore described, and the lever 250 of pinch roll assembly 237 is operated to grip and press the strip between the pinch rolls 242 and 244 and one of the rolls is motivated thereby sending the strip toward the rolls mounted on carriages 36 and 38. As the strip passes through deburring rolls 166 and 196, any burrs on the edges of the strip are coined or pressed into the strip material by the inwardly converging flat sides of the U-shaped groove 252. As the strip emerges from the deburring rolls it is passed through the round edging rolls 122 and 186 where the deburred edges of the strip, which may now be slightly bevelled, are compressed against the arcuate or rounded terminals or seats of the U-shaped grooves 254 and whereby by plastic deformation the strip edges are rounded either completely or substantially completely. There may be some slight irregularity of the rounded edge of the strip mid-way of the thickness of the strip as it emerges from the round-edging rolls and such irregularity is completely eliminated by passing the strip between the finishing rolls 170 and 194 where the rounded edges are now compressed against the concave U-shaped grooves 256 of greater width and less curvature than grooves 254 of rolls 122 and 186. Thereafter the finished round-edged strip passes over the support roll 236.

The operation described above is employed when the strip material is of substantial thickness and will not buckle when compressed between the working rolls of carriages 36 and 38. When a thin strip is being worked as is susceptible to buckling, the shaft rod 220 is moved to pivot on upright 216 until an end thereof engages upright 214 and the roll 222 engages the strip 262 passing over roll 212, whereby the cooperation of rolls 212 and 222 prevent any possibility of strip buckling.

While the operation of the apparatus of the invention has been described in connection with the deburring, round-edging and finishing of metal strip edges, it is also, by easy modification, applicable for the deburring or round-edging of a metal ring workpiece as diagrammatically illustrated by FIGURE 9. To adapt the apparatus for edging a metal ring, annular rolls 166, 196, 170 and 194 are removed leaving rolls 122 and 186 between which is positioned a metal ring 271. The metal ring is compressed between the remaining rolls 122 and 186 by operating bell crank 206 against spring compression, as hereinbefore described, and drive roll 122 is motivated to effectively coin the inner and outer edges of the ring.

FIGURE 10 illustrates a schematic View of a modification of the apparatus for edging metal circular plates or discs such as metal disc 268. In this modification, rolls 166, 196, 170 and 194 are removed, leaving the rolls 122 and 186 as with FIGURE 9. However, for the edging of metal discs, a third roll 270 is employed and is grooved to coincide with the grooves of rolls 122 and 186 so that the three rolls are, preferably, identically grooved. The third roll is rotatably mounted on one end of lever arm 272 as at 274 and the other end of the lever arm is pivoted as at 276. A suitable pressure means schematically illus trated as 278, which may be a spring compression means such as spring 142, or a hydraulic means, is mounted adjacent the arm 272 to urge the lever connected roll 270 in pressure contact with disc 268. The third roll 270 is so positioned in abutment with disc 268 that the axes of roll 122 and roll 270 lie in common plane to the left of the axis of disc 268 in order for the roll 270 to maintain the disc between the rolls 122 and 186 during the edging operation.

FIGURE 11 is a schematic top view of a modified form of the apparatus for handling elongated irregular shaped workpieces. The top wall 280 is intended to be shown schematically since it is identical to the top wall 22 of FIGURES l and 3. The base blocks 40 and 78 are mounted on rail means for movement relative to each other similarly as shown in FIGURES 1 and 3. However, the motivating screw 200 shown in FIGURES 1 and 3 for moving block 78 is substituted by a pneumatic or hydraulic means 282 comprising a cylinder 284 suitably mounted on rail means 286 and 288 and connected to block 78 by a linkage 290, whereby the roll 186 mounted on block 78 is urged toward roll 122 on the block 40. Rolls 196 and 194, as illustrated in FIGURES l and 3, are omitted. An irregularly shaped workpiece strip 288, preferably having one straight side is passed between the rolls with rolls 166, 122 and 170 on the one side and roll 186 on the other side of the strip. Since a pneumatic or hydraulic system is now employed to move block 78 in lieu of the screw 200, it will be apparent that the roll 186 will automatically follow the contour of the irreguar side of the strip 288 in contact with roll 186.

Various modification of the invention are contemplated within the scope of the appended claims.

What is claimed is:

1. Apparatus for edging metal sheet and strip material comprising first and second carriages, rail means, the carriages being mounted on said rail means and at least one of the carriages being translatorily movable relative to the other along the rail means, a fixeh seat mounted substantially adjacent one end portion of the rail means, yieldable compression means connected to and between the seat means and the first carriage, each carriage being a composite carriage comprising an intermediate block and a pair of wing blocks, one wing block being adjustably pivotably connected to one side of the intermediate block and the other wing block being adjustably pivotably connected to an opposite side of the intermediate block, the intermediate block of each carriage engaging the rail means, means for motivating the second carriage along said rail means, said motivating means being connected to the intermediate block of the second carriage, and a plurality of substantially cylindrical rolls each having a circumferential groove in the peripheral surface thereof being rotatably mounted one on each of the blocks with the grooves thereof being substantially in a common plane.

2. Appaartus for edging metal sheet and strip material according to claim 1, wherein the second carriage is adjustably translatorily movable on said rail means relative to the first carriage.

3. Apparatus for edging metal sheet and strip material according to claim 1, wherein the carriage blocks of each carriage are in substantial alignment with each other transversely of the rail means.

4. Apparatus for edging metal sheet and strip material according to claim 1, comprising spring means connected between the intermediate block and the wing blocks on each carriage for normally urging the wing blocks outwardly of their respective intermediate blocks about their pivotal connections.

5. Apparatus for edging metal sheet and strip material according to claim 1, wherein the yieldable compression means connected to the first carriage is connected to the intermediate block of the carriage.

6. Apparatus for edging metal sheet and strip material according to claim 1, wherein one wing block of the first carriage and one wing block of the second carriage are a first pair of complementary wing blocks both positioned adjacent one longitudinal side of the rail means and the other wing blocks of the first and second carriages being a second pair of complementary wing blocks both positioned adjacent the other longitudinal side of the rail means.

7. Apparatus for edging metal sheet and strip material according to claim 6, wherein the rolls mounted on said first pair of complementary wing blocks each have an identical continuous V-shaped groove in the peripheral surface thereof, the rolls mounted on the intermediate blocks each have an identical continuous U-shaped arcuate groove in the peripheral surface thereof, the rolls mounted on the second pair of complementary wing blocks each have an identical continuous U-shaped arcuate groove in the peripheral surface thereof, and the grooves in the rolls of the second pair of wing blocks being of greater width and less curvature than the grooves of the intermediate block rolls.

8. Apparatus for edging metal sheet and strip material according to claim 1, wherein the motivating means connected to the intermediate block of the second carriage is a screw threadedly engaged through the said intermediate block.

9. Apparatus for edging metal sheet and strip materialaccording to claim 1, wherein the motivating means connected to the intermediate block of the second carriage is a pneumatically or hydraulically operated piston means connected to a side of the block and directed longitudinally of the rail means.

10. Apparatus for edging metal sheet and strip material comprising a housing front and rear walls, side Walls and top and bottom walls, rail means mounted in said housing below said top Wall, first and second carriages mounted on the rail means and at least one of the carriages being translatorily movable relative to the other along the rail means, a fixed seat mounted substantially adjacent one end portion of the rail means, yieldable compression means connected to and between the seat means and the first carriage, each carriage being a composite carriage comprising an intermediate block and a pair of Wing blocks, one wing block being adjustably pivotably connected to one side of the intermediate block and the other wing block being adjustably pivotably connected to an opposite side of the intermediate block, the intermediate block of each carriage engaging the rail means, means for motivating the second carriage along said rail means, said motivating means being connected to the intermediate block of the second carriage, each block having a rotatable shaft mounted therein and all shafts extending out- Wardly of their respective blocks in a common direction, an elongated intermediate block slot in said top wall longitudinally directed between the side Walls, said intermediate blocks each having a portion movable along the slot,

elongated wing block slots one on each side of the intermediate block slot, the wing block shafts of one of said carriages being longitudinally movable in said Wing block slots, a plurality of substantially cylindrical rolls each having a circumferential groove in the peripheral surface thereof being rotatably mounted on each of the block shafts above said top wall and with the grooves thereof substantially in a common plane.

11. Apparatus for edging metal sheet and strip material according to claim 10, comprising a pair of bridge members spaced laterally of each other lengthwise of said intermediate block slot and bridging said slot, an elongated first roll member mounted in said intermediate block slot with opposite ends thereof mounted on said spaced bridge members, a rod member bridging said side walls and positioned above the top Wall, a second elongated roll mounted on said rod and positioned above said first roll member and forming therewith a pinch roll assembly.

12. Apparatus for edging metal sheet and strip material according to claim 10, comprising a pair of laterally spaced upwardly extending arms secured to at least one of said rear wall and front wall, a pair of elongated rolls mounted on and between the arms with one roll being positioned vertically above the other and forming therewith a feed pinch roll assembly.

13. Apparatus for edging metal sheet and strip material according to claim 10, wherein said cylindrical rolls are removably mounted on said block shafts.

14. Apparatus for edging metal sheet and strip material according to claim 10, comprising means for adjusting the wing blocks of one carriage laterally of the wing blocks of the other carriage.

References Cited UNITED STATES PATENTS 1,837,494 12/1931 Sessions 72-206 2,179,461 11/1939 Yoder 72-206 3,006,401 10/1961 Wognum et al. 72234 3,206,965 9/1965 Gnuer 72--206 3,343,394 9/1967 Gauer 72-199 CHARLES W. LANHAM, Primary Examiner.

A. RUDERMAN, Assistant Examiner. 

